One of the nicer features of Apple's AirPort Express wireless router is that it can wirelessly stream iTunes audio from your PC or Mac to a real life sound system, so that you don't have to listen to your undoubtedly cool tunes on your small computer speakers. But what if you want to stream audio from something other than iTunes? That's where Airfoil comes in, a small piece of software from Rogue Amoeba that lets users stream audio from pretty much any application.

It's been available for the Mac for some 14 months, but starting today Windows users can participate in the fun. It's still in beta for Windows, so be mindful of any bugs that haven't been worked out quite yet. It does cost $25 for the full version, but that's a small price to pay to be able to use the AirPort Express the way you want to use it, without any of Apple's annoying meddling. Thanks, Christopher!